Move pub into sdk/lib/_internal.

utils/tests/pub/install/path/relative_path_test.dart

-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS d.file
-// for details. All rights reserved. Use of this source code is governed by a
-// BSD-style license that can be found in the LICENSE d.file.
-
-import 'package:pathos/path.dart' as path;
-
-import '../../../../pub/exit_codes.dart' as exit_codes;
-import '../../descriptor.dart' as d;
-import '../../test_pub.dart';
-
-main() {
-  initConfig();
-  integration("can use relative path", () {
-    d.dir("foo", [
-      d.libDir("foo"),
-      d.libPubspec("foo", "0.0.1")
-    ]).create();
-
-    d.dir(appPath, [
-      d.pubspec({
-        "name": "myapp",
-        "dependencies": {
-          "foo": {"path": "../foo"}
-        }
-      })
-    ]).create();
-
-    schedulePub(args: ["install"],
-        output: new RegExp(r"Dependencies installed!$"));
-
-    d.dir(packagesPath, [
-      d.dir("foo", [
-        d.file("foo.dart", 'main() => "foo";')
-      ])
-    ]).validate();
-  });
-
-  integration("path is relative to containing d.pubspec", () {
-    d.dir("relative", [
-      d.dir("foo", [
-        d.libDir("foo"),
-        d.libPubspec("foo", "0.0.1", deps: [
-          {"path": "../bar"}
-        ])
-      ]),
-      d.dir("bar", [
-        d.libDir("bar"),
-        d.libPubspec("bar", "0.0.1")
-      ])
-    ]).create();
-
-    d.dir(appPath, [
-      d.pubspec({
-        "name": "myapp",
-        "dependencies": {
-          "foo": {"path": "../relative/foo"}
-        }
-      })
-    ]).create();
-
-    schedulePub(args: ["install"],
-        output: new RegExp(r"Dependencies installed!$"));
-
-    d.dir(packagesPath, [
-      d.dir("foo", [
-        d.file("foo.dart", 'main() => "foo";')
-      ]),
-      d.dir("bar", [
-        d.file("bar.dart", 'main() => "bar";')
-      ])
-    ]).validate();
-  });
-}